In the literature that spans political science, political economy, and policy science, a large number of questions about processes of change remain unanswered, particularly about how agenda setting, decision making, and implementation occur. Thus, there is little theory to explain how issues of reform come to the attention of government decision makers or how reform of policies and institutional arrangements becomes part of their agenda. Even less is known about how policy elites weigh the often urgent and well-articulated advice they receive about policy and institutional changes, their own intellectual [p4] and political views about such changes, and economic and political pressure to alter policies, against equally pressing concerns about the impact of their decisions on existing political and bureaucratic relationships. The factors that affect whether policies will be pursued, altered, revised, or sustained after they have been decided upon are also generally left unexplored because implementation and sustainability are often considered to be matters of effective administration, not political processes.
Merilee Grindle and John W. Thomas (1991), Public Choices and Policy Change: The Political Economy of Reform in Developing Countries, p. 3-4.